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e_padlock.c: last x86_64 commit didn't work with some optimizers.

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This commit is contained in:
Andy Polyakov 2011-05-24 17:18:19 +00:00
parent 760d2551fb
commit 67d8487bb8
1 changed files with 15 additions and 13 deletions
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28
engines/e_padlock.c
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@ -453,32 +453,33 @@ padlock_available(void)
{
char vendor_string[16];
unsigned int eax, edx;
size_t scratch;
/* Are we running on the Centaur (VIA) CPU? */
eax = 0x00000000;
vendor_string[12] = 0;
asm volatile (
"pushq %%rbx\n"
"movq %%rbx,%1\n"
"cpuid\n"
"movl %%ebx,(%1)\n"
"movl %%edx,4(%1)\n"
"movl %%ecx,8(%1)\n"
"popq %%rbx"
: "+a"(eax) : "r"(vendor_string) : "rcx", "rdx");
"movl %%ebx,(%2)\n"
"movl %%edx,4(%2)\n"
"movl %%ecx,8(%2)\n"
"movq %1,%%rbx"
: "+a"(eax), "=&r"(scratch) : "r"(vendor_string) : "rcx", "rdx");
if (strcmp(vendor_string, "CentaurHauls") != 0)
return 0;
/* Check for Centaur Extended Feature Flags presence */
eax = 0xC0000000;
asm volatile ("pushq %%rbx; cpuid; popq %%rbx"
: "+a"(eax) : : "rcx", "rdx");
asm volatile ("movq %%rbx,%1; cpuid; movq %1,%%rbx"
: "+a"(eax), "=&r"(scratch) : : "rcx", "rdx");
if (eax < 0xC0000001)
return 0;
/* Read the Centaur Extended Feature Flags */
eax = 0xC0000001;
asm volatile ("pushq %%rbx; cpuid; popq %%rbx"
: "+a"(eax), "=d"(edx) : : "rcx");
asm volatile ("movq %%rbx,%2; cpuid; movq %2,%%rbx"
: "+a"(eax), "=d"(edx), "=&r"(scratch) : : "rcx");
/* Fill up some flags */
padlock_use_ace = ((edx & (0x3<<6)) == (0x3<<6));
@ -534,12 +535,13 @@ static inline void *name(size_t cnt, \
struct padlock_cipher_data *cdata, \
void *out, const void *inp) \
{ void *iv; \
asm volatile ( "pushq %%rbx\n" \
size_t scratch; \
asm volatile ( "movq %%rbx,%4\n" \
" leaq 16(%0),%%rdx\n" \
" leaq 32(%0),%%rbx\n" \
rep_xcrypt "\n" \
" popq %%rbx" \
: "=a"(iv), "=c"(cnt), "=D"(out), "=S"(inp) \
" movq %%rbx,%4" \
: "=a"(iv), "=c"(cnt), "=D"(out), "=S"(inp), "=&r"(scratch) \
: "0"(cdata), "1"(cnt), "2"(out), "3"(inp) \
: "rdx", "cc", "memory"); \
return iv; \